Direct monitoring is a local listening path
It normally lets an input reach headphones or outputs without making the full round trip through recording software. The exact implementation depends on the interface.
Loopback routes computer audio
Loopback is used to bring playback or application audio into a recordable/streamable input path. It is not created just because direct monitoring exists.
Test the route
Record a short file and check whether you are hearing a direct copy, a software return or both.




